The thesis focuses on the plan and design of a new urban axis based on the HSR at the suburban town, Baohua town, along the HSR between Shanghai and Nanjing. With the HSR as an urban trigger, the project redefines the function of infrastructure as a public promenade. Through design and plan of the axis and the landmark space it connects, the future satellite city will not only embrace the resource brought by high-speed rail, but also rethinks and adapt vernacular culture and industry to create a variety of leisure and low-density spaces for the residents. The project redefines the relationship between city and infrastructure. The infrastructure is not simply designed for transportation, but transformed into occupiable public space. Through the planning of the urban axis, the infrastructure efficiently supports people to commute locally, regionally and nationally. Through architectural intervention, the infrastructure is designed to connect and blend into the landmark spaces. It become an urban promenade to experience the city.